Centrifugal oee separator



5Sheets-Sheet 1.

(No Model.)

0. 13'. PEGK; GBNTRIFUGAL ORE S'EPARATOR.

Patented June 13,1893.

mums warms co PH (No Model.) 5 Sheets-Sheet 2. 0. B. PECK.

GENTRIFUGAL ORE SEPAEATOR. No. 499,342. Patented June 13, 1893.

Ill v 2% (No Model.) 5 Sheets-Sheet 4.

O.B.PECK. OENTRIFUGAL ORE SBPARATOR.

UNITED ST TES PATENT OP C :13,

TO THE PATENT TITLE COMPANY, OF SAME PLACE.

CENTRIFLUGAL'O'RE-SEPARATOR.

SPECIFICATION forming part of LettersPatent No. 499,342, dated. June 13,1893. Application filed J'unel l, 1892. Serial 115.436.734. memorial.)-

To all whom it may concern.- 3

Be it known that I; ORRIN B. PECK, a citizen of the United States,residing at Chicago, Illinois, have invented certain new and usefulImprovements in Centrifugal Ore-Separators, of which the following is aspecification.

The object of my invention relates more particularly to the separatingsurface'used in centrifugal ore separators, and more specifh cally tomaking the separating surface vibratory, and means for imparting ayielding or vibratory motion to such separating rim or surface; and myinvention consists in the features and details of constructionhereinafter described and claimed.

In the drawings, Figure l is a transverse vertical central section of awheel containing my improvements. Fig. 2 is a plan view ofa cam wheelhereinafter described. Figs. 3 and 4 are vertical sections of portionsof the rim of a separating wheel in somewhat different positions. Fig. 5is a-plan sectional view on line 5, of 'Fig. 4,1ooking in the directionof the arrows. Fig. 6 is a vertical section of a portion of the rim ofaseparating wheel taken on the line 6 of Fig. '9; looking in thedirection of the arrow, with the separating surface of the wheel initsinnerposition. Fig. 7 is a vertical section of theseparating rim ofthe wheel, taken in line 7 of Fig. 9, with the separating'rim in itsouter-or normal position. Fig. 8 is a cross section of the rim of thewheel, modified. Fig. 9 is a plan sectional view, taken in line 9 ofFig.6, with the curbing lever and stop shown in dotted lines. Fig. 10 isa transverse sectional view of a separating wheel, modified, and Fig. 11is a transverse vertical section of a modified arrangement of separatingsurface andmeans'for supporting and rotating it.

In making my improved rotatable separating wheel for centrifugal oreseparators, to eliminate the lighter and more worthless particles fromthe heavier and more valuable while in a fine or powdery condition, bythe action of centrifugal force, I makea wheel A, preferably of largediameter and supported in a suitable frame work, and capable of beingrotated by any convenient motive power;

The portion of the wheel extending out from termed the supporting framework of the wheel, as it is intended to support the separating rimat ornear its circumference. This separating rim, as shown in Fig. 1, ispreferably formed of a trough-shaped piece B, with its inner edge'turned up into an annular flange b. The supporting frame work of thewheel is also provided withan upturned annular flange a, around whichthe annular order to impart thedesired vibratory motion to theseparating rim of the wheel,in the construction shown in Fig. 1, I havearranged cam wheels'orspider wheels C, mounted on shafts c, rotated bybelts driven by the main shaft of the shell, as shown in Fig. 1. As thearms of these cam or spider wheels come around .in their rotation, theysuccessively strike against the outer surface of the separatingriin,'and thusimpart a constant vibratory motion to the same. In theconstruction shownin'Figs. 3, 4 and 5, the separating rim is made of anannular plate, preferably rubber, with itsglower edge inturned andresting under thereceiving plate of the wheel. Around this rubber orflexible separating rim is arranged the supporting back 13*, and betweenthe two are preferably arranged, at suitable intervals, vertical metalstrips or plates 1), with rods 19 extending out through the supportingback, provided with heads b Coiled springs are arranged around the rodsto hold these heads *out the desired distance from the supporting back.Arranged at suitable distances apart in the curbing are stationarybuffers, C, rounded at their corners, as shown in Fig. 5. As the heads bare carried around by the revolutions of the wheel, they strike againstthe buffers C, and are forced in with a quick sharp blow, thus impartinga tremor or vibration to the flexible separating rim of the wheel.

In the construction shown in Figs. 7,8 and 9, I have shown theseparating rim B, made of an inner and outerportiornthe inner beingtrough shaped, as in Fig. 1. The outer portion of the separating rim, inthe construction now under consideration, is made of sections or blocks,and the inner or separating surface of rubber, the blocks being embeddedin the rubber, as shown in Fig. 9. The separating rim, in this case, isfastened to the supporting back and frame work of the wheel by eye boltsD and D. The eye bolt D is provided with a rubber cushion (Z, so thatthe separating rim will be elastically connected to the supporting back.To impart the desired vibratory motion to the supporting rim, I arrangea wheelE in the curbing, supported 011 a shaft extending out through thetop of the apparatus, and provided with a pulley, e, by which the shaftand the wheel may be driven or rotated by a belt connected to anysuitable motive power. I arrange a lever, F, fulcrumed at f, andembracing the hearing or sleeve in which the shaft of the wheel E ismounted. A stop, f, consisting of a set bolt, is arranged in a lug orbracket, as shown, at one side of the lever F, sothat by turning thebolt in or out, the position of the lever, and consequently, theposition of the shaft and wheel E, may be regulated ordetermined. Thestop is arranged at that side toward which thelever would be moved, bythe frictional contactof the wheel with the flexible separating rim. Thewheel E impinges against the flexible separating rim, as shown in Fig.9, to the extent that it cuts into the path of the circumference of therim, which may be regulated as desired by the set screw f, through whichthe wheel E may be held at a radial position to the separating wheel, orat a greater or less angle to the radius to adjust the degree that itssurface will cut into the path of the circumference of the flexibleseparating rim. This will bereadily understood from an inspection ofFigs. 6 and Q of the drawings, and need not be further dwelt upon.It-will be understood from this construction that as the flexible rimpasses around in its course, it will be deflected or bent in by thewheel E.

y In the construction shown in Fig. 10, the shaft of the separatingwheel. is provided with two pulleys G and G, connecting it by belts withpulleys on acounter shaft H. The hub of the separating wheelis providedwith the rims g and g, which are adapted respect,- ively to engage withthe lower and upper ends of the pulleys G. and G', as such pulleys aremoved respectively toward the hub. To that end, the pulleys arelongitudinally movable on the shaft, and are supported by cross arms,71., connected to a rodI, and pivotally fulcrumed in brackets i. A belt,I'l', froma pulley on the shaft I-I, engages with a pulley J on a studj. A stop or stud j is arranged on the rod 1, and acam segmentj isarranged on a disk J, rotated by the pulley J. As the cam segment passesaround it-bears against the stop j, and forces it down, and along withit the rod I. A cam K is arranged on the rod I, to bear against a rod70, carryinga buffer contactible with the flexible separating rim of theWheel. As the rod I is forced down, the cam K forces the buffer rod 70in, so as to bring the buffer 70 into contact with the outside of theflexible rim B. As the rod 1 is forced down, the pulley G is forced upinto frictional contact with the rim g, and as this pulley is of lessdiameter than the pulley G, it imparts an accelerated speed of rotationto the separating wheel during the time that the rod I is down and thebuffer 7c is in contact with the flexible separating rim of the wheel.The movementof the red I, which brings the pulley Ginto frictionalcontact with its appropriate end of the hub of the separating wheel,moves. the pulley G out of contact with its end, so as to permit ofthisaccelerated speed of rotation. The instant that the cam segment 3'passes the stop j on the rod I, such. rod is thrown up by means of aspring I. This upward movement carries the pulley G in turn intofrictional contact with its appropriate end of the hub of the separatingWheel, and throws the pulley G out of contact with its end. At the sametime, the buffer-7c ceases to be pressed in by the cam K, and is movedout by a spring on. the rod 70, from contact with the flexibleseparating rim. As the pulley G is larger than the pulley G, as soon. asit comes in frictional contact with its endofithe hub of the separatingwheel, the speed of rotation of the wheel isdccreased.

The operation above described takes place every time that the camsegment J is carried around in the revolutions of the pulley J, so thatthe separating wheel is successively driven atalternatingspeeds ofrotation, and the bufiers k are alternatelyforced in against theflexible separating rim, or released from contact with it, so astoimpart a tremor-or vibratory motion to the separating rim each time thebuffers lo are brought into contact with it. main at all times incontactwith theflexible separating rim of the wheel, and. be forced farther in,so asto impartincreased vibratory motion to the rim at such times, asthe speed of the separating wheel isaccelerated, or. increased. By thusalternately driving the separating wheel at a greater or lessspeedofrotation, the particles accumulating on the separating surface duringthe retardedlspeed of rotation, may be thrown off during the acceleratedspeed. In this arrangement, therefore both the accelerated speed and theincreased vibration of the separating rim cooperate to effect thedischarge of the particles which are not thrown off by the normal speedof rotation and vibration of the separating rim.

In Fig. 11 I have shown a modification of If desired, the buffers 70 mayremy improvements. In this arrangement, I dispense with the main centralshaft, and make the supporting framework A in the form of a ring restingupon anumber of rollers, L,

supported in standards or brackets, L. To impart rotation to theseparating surface, I provide the outer rim of the frame work With aseries of cogs or teeth I, meshing with the gear wheel, Z, mounted onthe end of a'shaft Z driven by a pulley M, which is connected by a beltto any suitable motive power. In this way sufficient speed of rotationissecured to develop the desired amount of centrifugal force. In order toeffect the'desired vibration of the separating surface, I arrange thespider or cam wheel G in a standard or bracket at one or more places inthe line of its travel, so that its arms or projections willsuccessively contact against ,the separating surface, and impart toitthe vibration desired.

To feed the material to be treated upon the separating surface, amaterial supply pipe N is led into the proper place to deposit thematerial where wanted, and to supply the desired quantity of water tothe material under treatment, to wash and dilute it, a water supply pipeN is led in and provided with a number of perforations, through whichthe water willbe sprayed on the separating surface;

It will be apparent from theabove description thatvarious modificationsin the details of construction by which I' carry out or embody my ideas,may be employed, and I do not therefore desire to limit myself todetails of arrangement or construction, further than as Imay specify thesame in, my claims.

What I regard as new, and desire to secure by Letters Patent, is

1. In centrifugal ore separators, the combination of a supporting framework, an independently vibratable separating surface supported on'suchframe work, means for-effecting its vibration and means for rotatingsuch separating surface, at different alternating predetermined speeds,substantially as described.

2. In centrifugal ore separators, the combination of a supporting framework, a separatingsurface mounted on such frame Work and vibratable atdesired points in its rotation, means for effecting such vibration atpredetermined alternating degrees and means for rotating the separatingsurface, substantially as described. t v

3. 1n centrifugal ore separators, the combination of a supporting framework, a separating surface mounted on the frame work and vibratable atdesired points in its rotation to different and predetermined extents,and adjustable means for effecting such vibrations at predeterminedalternating degrees as desired, and means for rotating the separatingsurface, substantially as described.

4. In centrifugal ore separators, the combination of a supportingframework, a vibratable separating surface mounted upon such frame Work,means for effecting its vibration,

and means for rotating the separating surface at alternatingpredetermined difierences in speed of rotation, substantially asdescribed.

5. In centrifugal ore separators, the combination of a supporting framework, a vibratable separating surface mounted upon such frame work,means for effecting its vibration at alternating varying degrees, andmeans for rotating the separating surface at alternating predetermineddifferences in the speed of rotation, substantially as described.

ORRIN B. PEOK.

Witnesses:

THoMAs A. BANNING, SAMUEL E. HIBBEN.

